优先级常量
【Priority constants】
os.constants.priority 导出了以下进程调度常量。
【The following process scheduling constants are exported by
os.constants.priority.】
| Constant | Description |
|---|---|
PRIORITY_LOW |
The lowest process scheduling priority. This corresponds to
IDLE_PRIORITY_CLASS on Windows, and a nice value of
19 on all other platforms. |
PRIORITY_BELOW_NORMAL |
The process scheduling priority above PRIORITY_LOW and
below PRIORITY_NORMAL. This corresponds to
BELOW_NORMAL_PRIORITY_CLASS on Windows, and a nice value of
10 on all other platforms. |
PRIORITY_NORMAL |
The default process scheduling priority. This corresponds to
NORMAL_PRIORITY_CLASS on Windows, and a nice value of
0 on all other platforms. |
PRIORITY_ABOVE_NORMAL |
The process scheduling priority above PRIORITY_NORMAL and
below PRIORITY_HIGH. This corresponds to
ABOVE_NORMAL_PRIORITY_CLASS on Windows, and a nice value of
-7 on all other platforms. |
PRIORITY_HIGH |
The process scheduling priority above PRIORITY_ABOVE_NORMAL
and below PRIORITY_HIGHEST. This corresponds to
HIGH_PRIORITY_CLASS on Windows, and a nice value of
-14 on all other platforms. |
PRIORITY_HIGHEST |
The highest process scheduling priority. This corresponds to
REALTIME_PRIORITY_CLASS on Windows, and a nice value of
-20 on all other platforms. |